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bottom surface (Alexander Demidov) |
нижняя плоскость : 21 phrases in 12 subjects |
Astronautics | 4 |
Automated equipment | 3 |
Construction | 1 |
Dentistry | 1 |
Forestry | 1 |
Geology | 4 |
Makarov | 2 |
Medical | 1 |
Nautical | 1 |
Oil and gas technology | 1 |
Seismology | 1 |
Wood processing | 1 |